Circuit Breaker EVH1

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Lanzhou Great Wall Electrical Power Equipment Co., Ltd.

Jiangsu, China

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The EVH1-24/T1250-31.5 type vacuum circuit breaker is an indoor device with three-phase AC 50Hz and a rated voltage of 12kV. It can be used to monitor and protect electrical facilities in industries, mines, businesses, power plants, and substations. This product meets the following standards: GB1984-2003 "High-voltage AC circuit breaker", JB3855 "Indoor high-voltage AC vacuum circuit breaker", DL403 "10~35kV indoor high-voltage vacuum circuit breaker ordering technical conditions" and IEC62271-100: 2001 "High-voltage AC circuit breaker" "Relevant provisions of the device".Indoor high-voltage vacuum circuit breakers from the EVH1-24/T1250-31.5 series can be fitted in both handcart and fixed switch cabinets. The circuit breaker has several advantages, including a long life, simple maintenance, minimal pollution, no explosion hazard, low noise, and the ability to withstand tough working circumstances such as frequent operation.

Structured characteristics of Circuit Breaker

The EVH1-24/T1250-31.5 vacuum circuit breaker combines the arc extinguishing chamber and working mechanism on a single frame for an integrative layout.
This structural design has the potential to increase the performance of the operating mechanism and arc extinguishing.
The performance required for chamber opening and closing is more consistent, resulting in fewer intermediate transmission connections, lower energy consumption and noise, and more dependable circuit breaker operation.
The EVH1-24/T1250-31.5 indoor high-voltage vacuum circuit breaker is suitable for both handcart and fixed switch cabinet installation. The circuit breaker's primary circuit is designed with the vacuum arc extinguishing chamber potted into the insulating pole.
The vacuum arc extinguishing chamber is encased longitudinally in a tubular insulating cylinder.
The insulating cylinder is constructed from epoxy resin and cast using a technique.
This structural design not only protects the vacuum interrupter from external harm, but also assures that it is highly resistant to voltage effects even in humid, hot, and polluted settings.
The working mechanism is an independent spring energy storage system with manual and electric energy storage functions.
The operational mechanism is located in the chassis in front of the arc extinguishing chamber and has a splint-like structure.